Effect

Generation II

Spikes sets an entry hazard around the enemy team's field. Pokémon who switch into the spike-ridden field take 12.5% of their maximum HP in damage. Flying-type Pokémon are immune to this damage. The move Rapid Spin removes Spikes around the user.

Generation III

Spikes can now be set up to three times, each increasing the damage done to the opponent upon switching in. One layer of Spikes will damage the opponent Pokémon by 1/8 (12.5%) of its maximum HP, two layers will deal 1/6 (16.67%), and three layers will deal 1/4 (25%). Any Pokémon with Levitate will also be immune to the damage.

Generation V

Generation VI

Defog now removes all Spikes from play regardless of which side of the field they were placed on.

Pokémon Mystery Dungeon

Spikes creates a Spiked Tile underneath the user. Any Pokémon that steps on a Spiked Tile will lose 20 HP each. When this move is used by the player, the tile will remain hidden until a foe Pokémon steps on it; but if the move was used by a foe Pokémon, the player will be able to see it so it can be avoided at all times. However, Spiked Tile cannot be laid under one-tile ways and the entrance of a room.

Forretress spins around and glowing white spikes comes out of its body and hit the opponent, or Forretress fires black spikes at the opponent that surround it. When the opponent gets pricked by them, it hurts them.

Skarmory spins its body rapidly and multiple glowing metallic red spikes come out of its body and fall onto the battlefield. The spikes sink into the ground when they land. When the opponent switches to another Pokémon, small explosions go off under their feet, hurting them.

Forretress spins its body rapidly, and multiple pyramid-shaped spikes come out of its body and onto the battlefield. The spikes make the opponent's movements restricted, or Forretress shoots out spikes from the horns sticking out of its body and onto the battlefield.